A procedure in which assignment of subjects and treatments to groups is based on chance is known as:
A) randomisation
B) constancy in conditions.
C) matching.
D) counterbalance

Question

Quizplus · Accepted Answer

Randomisation is the method of allocating subjects to groups based on chance. This ensures that each subject has an equal chance of being assigned to any group and reduces the possibility of bias in treatment assignment.

A Procedure in Which Assignment of Subjects and Treatments to Groups